Maine Apostle Index Card is an official document issued by the Secretary of State of Maine that authenticates public documents for use outside the United States. It is a document attestation service used to confirm the authenticity of signatures, seals and stamps on public documents. The Maine Apostle Index Card is used by businesses, individuals, and organizations outside the U.S. to prove the validity of these documents. There are two types of Maine Apostle Index Card: Notarized Maine Apostle Index Card and Authenticated Maine Apostle Index Card. The Notarized Maine Apostle Index Card is used for documents authenticated by a Maine notary public. The Authenticated Maine Apostle Index Card is used for documents authenticated by the Secretary of State of Maine. Both types of index card must be signed by the Secretary of State, or their designee, and affixed with the official Maine Apostle Seal.